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Diffstat (limited to 'source/Plugins/Language/CPlusPlus/LibStdcpp.cpp')
| -rw-r--r-- | source/Plugins/Language/CPlusPlus/LibStdcpp.cpp | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp b/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp new file mode 100644 index 0000000000000..ed89c5c84ea3a --- /dev/null +++ b/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp @@ -0,0 +1,373 @@ +//===-- LibStdcpp.cpp ---------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "LibStdcpp.h" + +#include "lldb/Core/DataBufferHeap.h" +#include "lldb/Core/Error.h" +#include "lldb/Core/Stream.h" +#include "lldb/Core/ValueObject.h" +#include "lldb/Core/ValueObjectConstResult.h" +#include "lldb/DataFormatters/StringPrinter.h" +#include "lldb/DataFormatters/VectorIterator.h" +#include "lldb/Host/Endian.h" +#include "lldb/Symbol/ClangASTContext.h" +#include "lldb/Target/Target.h" + +using namespace lldb; +using namespace lldb_private; +using namespace lldb_private::formatters; + +class LibstdcppMapIteratorSyntheticFrontEnd : public SyntheticChildrenFrontEnd +{ +public: + LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp); + + size_t + CalculateNumChildren() override; + + lldb::ValueObjectSP + GetChildAtIndex(size_t idx) override; + + bool + Update() override; + + bool + MightHaveChildren() override; + + size_t + GetIndexOfChildWithName (const ConstString &name) override; + + ~LibstdcppMapIteratorSyntheticFrontEnd() override; + +private: + ExecutionContextRef m_exe_ctx_ref; + lldb::addr_t m_pair_address; + CompilerType m_pair_type; + EvaluateExpressionOptions m_options; + lldb::ValueObjectSP m_pair_sp; +}; + +/* + (std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = { + (_Base_ptr) _M_node = 0x0000000100103910 { + (std::_Rb_tree_color) _M_color = _S_black + (std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0 + (std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000 + (std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000 + } + } + */ + +LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : + SyntheticChildrenFrontEnd(*valobj_sp.get()), + m_exe_ctx_ref(), + m_pair_address(0), + m_pair_type(), + m_options(), + m_pair_sp() +{ + if (valobj_sp) + Update(); + m_options.SetCoerceToId(false); + m_options.SetUnwindOnError(true); + m_options.SetKeepInMemory(true); + m_options.SetUseDynamic(lldb::eDynamicCanRunTarget); +} + +bool +LibstdcppMapIteratorSyntheticFrontEnd::Update() +{ + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return false; + + TargetSP target_sp(valobj_sp->GetTargetSP()); + + if (!target_sp) + return false; + + bool is_64bit = (target_sp->GetArchitecture().GetAddressByteSize() == 8); + + if (!valobj_sp) + return false; + m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); + + ValueObjectSP _M_node_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_node"), true)); + if (!_M_node_sp) + return false; + + m_pair_address = _M_node_sp->GetValueAsUnsigned(0); + if (m_pair_address == 0) + return false; + + m_pair_address += (is_64bit ? 32 : 16); + + CompilerType my_type(valobj_sp->GetCompilerType()); + if (my_type.GetNumTemplateArguments() >= 1) + { + TemplateArgumentKind kind; + CompilerType pair_type = my_type.GetTemplateArgument(0, kind); + if (kind != eTemplateArgumentKindType && kind != eTemplateArgumentKindTemplate && kind != eTemplateArgumentKindTemplateExpansion) + return false; + m_pair_type = pair_type; + } + else + return false; + + return true; +} + +size_t +LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren () +{ + return 2; +} + +lldb::ValueObjectSP +LibstdcppMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) +{ + if (m_pair_address != 0 && m_pair_type) + { + if (!m_pair_sp) + m_pair_sp = CreateValueObjectFromAddress("pair", m_pair_address, m_exe_ctx_ref, m_pair_type); + if (m_pair_sp) + return m_pair_sp->GetChildAtIndex(idx, true); + } + return lldb::ValueObjectSP(); +} + +bool +LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren () +{ + return true; +} + +size_t +LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) +{ + if (name == ConstString("first")) + return 0; + if (name == ConstString("second")) + return 1; + return UINT32_MAX; +} + +LibstdcppMapIteratorSyntheticFrontEnd::~LibstdcppMapIteratorSyntheticFrontEnd () +{} + +SyntheticChildrenFrontEnd* +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) +{ + if (!valobj_sp) + return NULL; + return (new LibstdcppMapIteratorSyntheticFrontEnd(valobj_sp)); +} + +/* + (lldb) fr var ibeg --ptr-depth 1 + (__gnu_cxx::__normal_iterator<int *, std::vector<int, std::allocator<int> > >) ibeg = { + _M_current = 0x00000001001037a0 { + *_M_current = 1 + } + } + */ + +SyntheticChildrenFrontEnd* +lldb_private::formatters::LibStdcppVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) +{ + static ConstString g_item_name; + if (!g_item_name) + g_item_name.SetCString("_M_current"); + if (!valobj_sp) + return NULL; + return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name)); +} + +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::VectorIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp, + ConstString item_name) : +SyntheticChildrenFrontEnd(*valobj_sp.get()), +m_exe_ctx_ref(), +m_item_name(item_name), +m_item_sp() +{ + if (valobj_sp) + Update(); +} + +bool +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::Update() +{ + m_item_sp.reset(); + + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return false; + + if (!valobj_sp) + return false; + + ValueObjectSP item_ptr(valobj_sp->GetChildMemberWithName(m_item_name,true)); + if (!item_ptr) + return false; + if (item_ptr->GetValueAsUnsigned(0) == 0) + return false; + Error err; + m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); + m_item_sp = CreateValueObjectFromAddress("item", item_ptr->GetValueAsUnsigned(0), m_exe_ctx_ref, item_ptr->GetCompilerType().GetPointeeType()); + if (err.Fail()) + m_item_sp.reset(); + return false; +} + +size_t +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::CalculateNumChildren () +{ + return 1; +} + +lldb::ValueObjectSP +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) +{ + if (idx == 0) + return m_item_sp; + return lldb::ValueObjectSP(); +} + +bool +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::MightHaveChildren () +{ + return true; +} + +size_t +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) +{ + if (name == ConstString("item")) + return 0; + return UINT32_MAX; +} + +lldb_private::formatters::VectorIteratorSyntheticFrontEnd::~VectorIteratorSyntheticFrontEnd () +{ +} + +bool +lldb_private::formatters::LibStdcppStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) +{ + const bool scalar_is_load_addr = true; + AddressType addr_type; + lldb::addr_t addr_of_string = valobj.GetAddressOf(scalar_is_load_addr, &addr_type); + if (addr_of_string != LLDB_INVALID_ADDRESS) + { + switch (addr_type) + { + case eAddressTypeLoad: + { + ProcessSP process_sp(valobj.GetProcessSP()); + if (!process_sp) + return false; + + StringPrinter::ReadStringAndDumpToStreamOptions options(valobj); + Error error; + lldb::addr_t addr_of_data = process_sp->ReadPointerFromMemory(addr_of_string, error); + if (error.Fail() || addr_of_data == 0 || addr_of_data == LLDB_INVALID_ADDRESS) + return false; + options.SetLocation(addr_of_data); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetNeedsZeroTermination(false); + options.SetBinaryZeroIsTerminator(true); + lldb::addr_t size_of_data = process_sp->ReadPointerFromMemory(addr_of_string + process_sp->GetAddressByteSize(), error); + if (error.Fail()) + return false; + options.SetSourceSize(size_of_data); + + if (!StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF8>(options)) + { + stream.Printf("Summary Unavailable"); + return true; + } + else + return true; + } + break; + case eAddressTypeHost: + break; + case eAddressTypeInvalid: + case eAddressTypeFile: + break; + } + } + return false; +} + +bool +lldb_private::formatters::LibStdcppWStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) +{ + const bool scalar_is_load_addr = true; + AddressType addr_type; + lldb::addr_t addr_of_string = valobj.GetAddressOf(scalar_is_load_addr, &addr_type); + if (addr_of_string != LLDB_INVALID_ADDRESS) + { + switch (addr_type) + { + case eAddressTypeLoad: + { + ProcessSP process_sp(valobj.GetProcessSP()); + if (!process_sp) + return false; + + CompilerType wchar_compiler_type = valobj.GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeWChar); + + if (!wchar_compiler_type) + return false; + + const uint32_t wchar_size = wchar_compiler_type.GetBitSize(nullptr); // Safe to pass NULL for exe_scope here + + StringPrinter::ReadStringAndDumpToStreamOptions options(valobj); + Error error; + lldb::addr_t addr_of_data = process_sp->ReadPointerFromMemory(addr_of_string, error); + if (error.Fail() || addr_of_data == 0 || addr_of_data == LLDB_INVALID_ADDRESS) + return false; + options.SetLocation(addr_of_data); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetNeedsZeroTermination(false); + options.SetBinaryZeroIsTerminator(false); + lldb::addr_t size_of_data = process_sp->ReadPointerFromMemory(addr_of_string + process_sp->GetAddressByteSize(), error); + if (error.Fail()) + return false; + options.SetSourceSize(size_of_data); + options.SetPrefixToken("L"); + + switch (wchar_size) + { + case 8: + return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF8>(options); + case 16: + return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16>(options); + case 32: + return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF32>(options); + default: + stream.Printf("size for wchar_t is not valid"); + return true; + } + return true; + } + break; + case eAddressTypeHost: + break; + case eAddressTypeInvalid: + case eAddressTypeFile: + break; + } + } + return false; +} |